84.39% is the change from 173 to 319
Calculation steps:
[( 319 - 173 ) ÷ 173] x 100 = 84.39%
Formula
Percentage change = [(319 - 173) / 173] x 100
Subtract the new number by the original number
319 - 173 = 146
146 ÷ 173 = 0.8439306358381503
0.8439306358381503 x 100 = 84.39%